UC3832DW

Overview

The UC3832DW is a precision low dropout linear controller manufactured by Texas Instruments, housed in a 16-pin SOIC (DW) package. It operates within an input voltage range of 4.5 V to 36 V and includes a 2 V ±1% reference. The device features a high-current driver capable of sourcing or sinking up to 400 mA at 25°C. Electrical characteristics specify a supply current of 6.5 mA to 15 mA depending on the input voltage. The component supports commercial operating temperatures from 0°C to 70°C.

Feature Summary

• Incorporates duty-ratio current limiting to manage peak load capability while restricting average power dissipation during fault conditions.
• Provides separate +VIN terminal and logic-level disable input for enhanced system control flexibility.
• Includes under-voltage lockout and thermal shutdown mechanisms to ensure safe operation.

Applications

• Designing very low dropout linear regulators with external NPN or PNP pass transistors.
• Creating constant-current-limited power supplies requiring specific short-circuit protection recovery.
• Implementing medium power regulator circuits utilizing programmable driver current limits.

Procurement Notes

Verify the specific suffix against the Package Option Addendum to confirm the exact temperature grade and packaging configuration. Ensure the procurement matches the required moisture sensitivity level and lead finish specifications listed for the SOIC-16 variant. Confirm RoHS compliance status directly with the manufacturer's documentation prior to ordering.

Selection Notes

Select this component when designing precision linear regulators that require duty-ratio current limiting rather than standard foldback methods. Consider the UC3832DW for applications needing a dedicated +VIN terminal and logic-level disable functionality. Evaluate the 16-pin SOIC package constraints against available board space and thermal requirements for the intended industrial or commercial environment.

Part Context

The UC3832DW belongs to the UCx832/3 series of precision linear regulators designed for low dropout applications. This series integrates control functions including error amplifiers, UVLO, and high-current drivers. The DW suffix specifically denotes the surface-mount SOIC-16 package option, distinguishing it from through-hole or ceramic variants within the broader family.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.